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Vaccination
Management
Disease Information
A PMWS update (Jake Waddilove)
ABOUT PMWS & PDNS
National Pork Board PMWS Fact Sheet
About PDNS (Jake Waddilive)
CEI Emerging Disease Notices: PMWS / PDNS
Conference and meetings archive
Case Histories
Yorkshire Farm, UK - Mike Muirhead - Final Update, June 2002
Mike Muirhead's case history of a Yorkshire farm with PMWS and PDNS.
East Anglia Farm, UK - Philip Richardson
This paper charts the course and effects of the disease on a single herd as well as highlighting the economic impact.
Photographs
Clinical signs
Photos of the clinical signs that are seen generally in pigs with PMWS and PDNS. Includes skin lesions, enlarged lymph glands, wasting and dead pigs.
Post mortem (1)
Photos of the signs that are seen in post-mortem samples of pigs with PMWS and PDNS. Includes interstitial pneumonia, secondary bacterial infection, enlarged lymph nodes, oedema and intra cytoplasmic inclusions
Post mortem (2)
More Photos of the signs that are seen in post-mortem samples of pigs with PMWS and PDNS.


PMWS Research Archives

Published Friday, August 20, 2010: Pig Journal Volume: 63 August 2010
Prevalence of Endemic Pig Disease in England: An Overview Six Months into a Large Scale Cross Sectional Study on Post-Weaning Multisytemic Wasting Syndrome (PMWS)
B. WEILAND, P. ALARCON, M. VELASOVA, A. NEVEL, H. TOWRIE, D. PFEIFFER, C. WATHES, D. WERLING
In April 2008 the Royal Veterinary College implemented a large scale cross-sectional study investigating risk factors affecting severity of Post- Weaning Multisystemic Wasting Syndrome (PMWS) on farms. Six months into the study 114 farms have been recruited and on each farm blood samples of 20 pigs, including sows, weaners, growers and finishers were collected and tested for Porcine Circovirus type 2 (PCV2), Actinobacillus pleuropneumoniae (APP), Porcine Parvovirus (PPV) and Porcine Reproductive and Respiratory Syndrome virus (PRRS). All farms tested either positive for PCV2 antibodies or the presence of the virus was confirmed by PCR. For PCV2 and PPV, maternal antibodies were detected in samples from weaners, however low prevalence of maternal antibodies for APP was observed in this age group despite high prevalence in sows. Furthermore, presence of APP antibodies were associated significantly with a positive PCV2 PCR test result in weaners in logistic regression models. In addition, positive PCV2 PCR results were associated with poor growth in weaners, growers and finishers. Besides providing prevalence data of important endemic pig diseases in England the preliminary results of this ongoing study indicate the potential importance of other pathogens for the development of PMWS. This study further provides field data that can be used as a baseline to assess the efficacy of PCV2 vaccines.

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